Head to head
2
Hard
1
1
Carpet
0
Byron Black's wins on the left · Jakob Hlasek's on the right · bar lengths share one scale
All meetings (4)
| 1996 | Canada Masters | Hard | R64 | Byron Black | 7-6(4) 3-1 RET |
| 1995 | Moscow | Carpet | R16 | Byron Black | 3-6 6-3 6-4 |
| 1994 | Davis Cup G1 SF: ZIM vs SUI | Hard | RR | Byron Black | 7-5 7-6(0) 6-4 |
| 1993 | Washington | Hard | R32 | Jakob Hlasek | 6-2 6-3 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.